I did a similar thing, actually, to render a successive series of Prawn documents (2-d scenes) into a Quicktime movie. Prawn -> series of pngs -> ffmpeg -> mov.

I did a similar thing, actually, to render a successive series of Prawn documents (2-d scenes) into a Quicktime movie. Prawn -> series of pngs -> ffmpeg -> mov. It was a quick-and-dirty hack, but I was surprised by the simplicity.